Code of Federal Regulations (Last Updated: October 10, 2024) |
Title 40 - Protection of Environment |
Chapter I - Environmental Protection Agency |
SubChapter D - Water Programs |
Part 141 - National Primary Drinking Water Regulations |
Subpart T - Enhanced Filtration and Disinfection - Systems Serving Fewer Than 10,000 People |
Disinfection Profile |
§ 141.530 - What is a disinfection profile and who must develop one? |
§ 141.531 - What criteria must a State use to determine that a profile is unnecessary? |
§ 141.532 - How does my system develop a disinfection profile and when must it begin? |
§ 141.533 - What data must my system collect to calculate a disinfection profile? |
§ 141.534 - How does my system use this data to calculate an inactivation ratio? |
§ 141.535 - What if my system uses chloramines, ozone, or chlorine dioxide for primary disinfection? |
§ 141.536 - My system has developed an inactivation ratio; what must we do now? |
General Requirements |
§ 141.500 - General requirements. |
§ 141.501 - Who is subject to the requirements of subpart T? |
§ 141.502 - When must my system comply with these requirements? |
§ 141.503 - What does subpart T require? |
Finished Water Reservoirs |
§ 141.510 - Is my system subject to the new finished water reservoir requirements? |
§ 141.511 - What is required of new finished water reservoirs? |
Reporting and Recordkeeping Requirements |
§ 141.570 - What does subpart T require that my system report to the State? |
§ 141.571 - What records does subpart T require my system to keep? |
Individual Filter Turbidity Requirements |
§ 141.560 - Is my system subject to individual filter turbidity requirements? |
§ 141.561 - What happens if my system's turbidity monitoring equipment fails? |
§ 141.562 - My system only has two or fewer filters - is there any special provision regarding individual filter turbidity monitoring? |
§ 141.563 - What follow-up action is my system required to take based on continuous turbidity monitoring? |
§ 141.564 - My system practices lime softening - is there any special provision regarding my individual filter turbidity monitoring? |
Additional Watershed Control Requirements for Unfiltered Systems |
§ 141.520 - Is my system subject to the updated watershed control requirements? |
§ 141.521 - What updated watershed control requirements must my unfiltered system implement to continue to avoid filtration? |
§ 141.522 - How does the State determine whether my system's watershed control requirements are adequate? |
Combined Filter Effluent Requirements |
§ 141.550 - Is my system required to meet subpart T combined filter effluent turbidity limits? |
§ 141.551 - What strengthened combined filter effluent turbidity limits must my system meet? |
§ 141.552 - My system consists of “alternative filtration” and is required to conduct a demonstration - what is required of my system and how does the State establish my turbidity limits? |
§ 141.553 - My system practices lime softening - is there any special provision regarding my combined filter effluent? |
Disinfection Benchmark |
§ 141.540 - Who has to develop a disinfection benchmark? |
§ 141.541 - What are significant changes to disinfection practice? |
§ 141.542 - What must my system do if we are considering a significant change to disinfection practices? |
§ 141.543 - How is the disinfection benchmark calculated? |
§ 141.544 - What if my system uses chloramines, ozone, or chlorine dioxide for primary disinfection? |